Run a full Auto-Scan and save the log file. That file will show the exact German error code (e.g., K-Fehler or Keine Kommunikation ), which is the key to solving the problem.
: Ensure you are launching the VCDSLoader.exe (Kolimer) with administrative privileges to allow it to hook into the system processes. Interface Configuration
Delete all existing VCDS drivers and files from your laptop.
The Kolimer loader is a third-party software patch designed to allow aftermarket VCDS cables (usually built on the Atmega162 microcontroller) to work with official VCDS software updates. When the loader throws a "Failed 2" error, it generally means the software cannot properly initialize or read the security data from the cable. The most common triggers include: vcds kolimer failed 2 new
If you own a Volkswagen, Audi, SEAT, or Skoda vehicle, the VAG-COM Diagnostic System (VCDS) by Ross-Tech is the holy grail of diagnostic tools. However, official hardware can be prohibitively expensive for casual DIY mechanics, leading many to turn to popular sourced from online marketplaces.
The PC fails to recognize the cable as a Ross-Tech device.
Corrupted Kolimer file? Try obtaining a fresh copy (different source). Some users report that or “Kolimer 2019” resolves “Failed 2 New.” Run a full Auto-Scan and save the log file
: Temporarily turn off your anti-virus before launching the loader.
Did this start after an or a Windows update ? Does your computer make a sound when you plug the cable in? Share public link
This usually means the loader failed to work with a newer version of VCDS, or the interface was plugged into the internet and the firmware was updated, rendering the loader useless. Symptoms: VCDS says "Interface: Not Found" or "Not Registered." The interface light is red instead of solid blue/green. The software refuses to perform coding or adaptation tasks. 2. Preliminary Steps Before Fixing Interface Configuration Delete all existing VCDS drivers and
If the loader fails, you must re-flash the atmega chip inside the interface.
The computer is using generic Windows USB drivers instead of the dedicated Ross-Tech/FTDI drivers required for the cable to communicate with the loader.